radon retest 4

https://radonwentzvilleindex.vantagequill.com/posts/why-radon-wentzville-homeowners-should-test-for-this-invisible-gas

After your initial radon test came back with levels above the EPA action limit, it's time to schedule a radon retest to ensure the mitigation system is working properly. Typically done after installing a radon reduction system or following any significant home renovations, a radon retest confirms that concentrations have dropped to a safe level. Make sure you follow the same testing guidelines as before: close windows and doors for 12 hours before the test, place the detector in the lowest live…